Five-fulcrum type lower die lifting structure of cup making machine

Abstract

The utility model discloses a five-fulcrum type lower die lifting structure of a cup making machine, which comprises a machine frame, a lower die seat, a lifting mechanism, a driving mechanism and a longitudinal limiting device, the lower die seat is installed on the machine frame in a sliding mode, the driving mechanism comprises a servo motor and a speed reducer, the servo motor is convenient to operate, the lifting of a lower die is controlled to be more stable, the speed is higher, and the speed is lower than that of the speed reducer. Compared with a hydraulic cylinder, energy consumption is low, an output shaft of a servo motor is connected with the input end of a speed reducer, a power shaft is arranged at the output end of the speed reducer, the lifting mechanism comprises a middle swing arm, a connecting frame and a connecting rod assembly, and the left side and the right side of the connecting frame are concaved inwards to form two small connecting rod mounting grooves respectively. The number of the connecting rod assemblies is the same as that of the small connecting rod mounting grooves, the lower die base is supported in multiple directions through the four sets of connecting rod assemblies, deflection is not prone to occurring, the operation stability is improved, each connecting rod assembly comprises a small connecting rod, the two small connecting rod mounting grooves on the same side share one connecting shaft, and the synchronism of the connecting rod assemblies on the same side during operation is improved.

Description

Technical Field

[0001] The utility model relates to the field of cup-making machines, in particular to a five-point type lower die lifting structure of a cup-making machine. Background Art

[0002] Cup-making machines usually adopt a hydraulic cylinder lifting mechanism to drive the lifting of the lower die base. The hydraulic system relies on liquids (such as hydraulic oil) to transmit pressure and power. The existing cup-making machines using a hydraulic cylinder lifting mechanism have problems of relatively slow speed and unsmooth opening / closing die process. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a five-point type lower die lifting structure of a cup-making machine.

[0004] To achieve the above purpose, the present application adopts the following technical solution: A five-point type lower die lifting structure of a cup-making machine, including a frame, a lower die base, a lifting mechanism, a driving mechanism, and a longitudinal limiting device. The lower die base is slidably installed on the frame and can slide up and down on the frame. The driving mechanism includes a servo motor and a speed reducer. The output shaft of the servo motor is connected to the input end of the speed reducer. A power shaft is provided at the output end of the speed reducer. A driven shaft is provided on the frame. The axis of the driven shaft is located on the extension line of the axis of the power shaft. An active swing arm is provided on the side of the power shaft close to the driven shaft. A driven swing arm is provided on the side of the driven shaft close to the power shaft. The lifting mechanism is used to convert the rotational motion of the driving mechanism into a linear motion. The lifting mechanism includes an intermediate swing arm, a connecting frame, and a connecting rod assembly. The intermediate swing arm is pivotally connected to the connecting frame, and the connecting frame is pivotally connected to the connecting rod assembly. The intermediate swing arm is pivotally connected to the active swing arm and the driven swing arm. Two small connecting rod mounting grooves are formed by inward depression on each of the left and right sides of the connecting frame. The small connecting rod mounting grooves on the left and right sides are symmetrically arranged. The number of the connecting rod assemblies is the same as the number of the small connecting rod mounting grooves. The connecting rod assembly includes a small connecting rod. The small connecting rod is placed into the small connecting rod mounting groove and pivotally connected to the small connecting rod mounting groove. Two small connecting rod mounting grooves on the same side share a connecting shaft. The connecting rod assembly is pivotally connected to the lower die base. The longitudinal limiting device is used to limit the connecting frame so that it can only move up and down.

[0005] Further, a non-circular power shaft connection port is provided on the active swing arm. The shape of the end of the power shaft matches the shape of the power shaft connection port. The power shaft is inserted into the power shaft connection port. When the power shaft rotates, it can drive the active swing arm to rotate around the power shaft.

[0006] Further, a non-circular intermediate swing arm connection port is provided on the active swing arm above the power shaft connection port. A middle swing arm shaft is connected to the middle swing arm by a bearing. The two ends of the middle swing arm shaft are respectively pivotally connected to the driven swing arm and the active swing arm shaft. The shape of the middle swing arm shaft near the active swing arm end matches the shape of the middle swing arm connection port.

[0007] Further, a through connection frame shaft port is provided in the upper part of the middle swing arm. A connection frame rotating shaft is provided on the connection frame and passes through the connection frame shaft port.

[0008] Further, the connecting rod assembly further includes a lower connecting rod group and an upper connecting rod. The lower connecting rod group consists of two lower connecting rods. The lower connecting rods are strip-shaped and bulge towards the connection frame in the middle. The lower connecting rods are respectively provided with shaft ports on the upper and lower sides and at the bulging positions.

[0009] Further, one shaft port is provided on each of the left and right sides of the small connecting rod. One shaft port of the small connecting rod is placed in the small connecting rod mounting groove and pivotally connected to the connection frame. The other shaft port of the small connecting rod is placed in the lower connecting rod group and pivotally connected to the shaft port at the bulging position of the lower connecting rod.

[0010] Further, a shaft seat is provided at the bottom of the lower die holder. Shaft ports are respectively provided at the upper and lower ends of the upper connecting rod. The shaft port at the upper end of the upper connecting rod is placed in the shaft seat and pivotally connected to the shaft seat. The shaft port at the lower end of the upper connecting rod is placed in the lower connecting rod group and pivotally connected to the shaft port on the upper side of the lower connecting rod. A shaft connecting block is provided on the frame. The shaft connecting block is placed in the lower connecting rod group and pivotally connected to the shaft port on the lower side of the lower connecting rod.

[0011] Further, the longitudinal limiting device includes a limiting rod provided on the lower die holder. The connection frame is provided with the same number of limiting holes as the limiting rods. A limiting channel is provided in the frame directly below the limiting holes. Guide copper sleeves are installed on the limiting holes and the limiting channels. The limiting rod passes through the guide copper sleeve.

[0012] Further, a plurality of bearing sleeves are provided at the lower part of the frame. The power shaft and the driven shaft pass through the bearing sleeves.

[0013] The beneficial effects of the present utility model are as follows: By using a servo motor and a speed reducer as the driving mechanism to control the movement of the lower die holder, it has a faster response speed and lower energy consumption compared to the traditional hydraulic cylinder lifting mechanism. In addition, the speed reducer can increase the output torque, reduce the influence of load fluctuations, and reduce vibration and noise to improve the overall stability of the lifting structure. And the connection frame uses four groups of connecting rod assemblies to lift the lower die synchronously from multiple directions, which can not only make the lifting of the lower die holder more stable and prevent the lower die holder from being prone to skew, but also significantly reduce the pressure borne by a single group of connecting rod assemblies. At the same time, through a connecting shaft, the connection frame on one side of the small connecting rod mounting groove is stressed simultaneously, with a larger stress-bearing area, and the stress is dispersed to a wider area, enabling it to support a larger-scale lower die. Brief Description of the Drawings

[0014] Figure 1 This is the overall schematic diagram of the present utility model.

[0015] Figure 2 This is the schematic diagram of the driving mechanism and the lifting mechanism.

[0016] Figure 3 This is the top view of the lifting mechanism.

[0017] Figure 4 This is the schematic diagram of the intermediate swing arm and the active swing arm.

[0018] In the figure: 11, servo motor; 12, speed reducer; 121, power shaft; 122 driven shaft; 21, active swing arm; 211, power shaft connection port; 212, intermediate swing arm connection port; 22, driven swing arm; 3, intermediate swing arm 31, intermediate swing arm shaft; 32, connecting frame shaft port; 4, connecting rod assembly; 41, small connecting rod; 42, lower connecting rod group; 43, upper connecting rod; 5, connecting frame; 51, limit hole; 511, guiding bronze bushing; 52, small connecting rod installation groove; 53, connecting shaft; 6, frame; 61, bearing sleeve; 62, shaft connecting block; 63, slide bar; 7, lower die base; 71, limit rod; 72, shaft seat. Detailed Description of the Preferred Embodiment

[0019] The following further elaborates on the present utility model in conjunction with the accompanying drawings. A five-point type lower die lifting structure of a cup-making machine includes a frame 6, a lower die base 7, a lifting mechanism, a driving mechanism, and a longitudinal limiting device. The lower die base 7 is slidably installed on the frame 6. Specifically, slide rods 63 are provided on the frame 6, and sliding channels are provided at the four corners of the lower die base and sleeved on the slide rods 63. The lower die base 7 can slide up and down on the frame 6 along the slide rods 63. The driving mechanism includes a servo motor 11 and a speed reducer 12. The servo motor 11 controls the lifting of the lower die more stably and faster. The speed reducer 12 can increase the output torque, reduce the influence of load fluctuations, and reduce vibration and noise to improve the overall stability of the lifting structure. The output shaft of the servo motor 11 is connected to the input end of the speed reducer 12. A power shaft 121 is provided at the output end of the speed reducer 12. A driven shaft 122 is provided on the frame 6. The axis of the driven shaft 122 is located on the extension line of the axis of the power shaft 121. An active swing arm 21 is provided on the side of the power shaft 121 close to the driven shaft, and a driven swing arm 22 is provided on the side of the driven shaft 122 close to the power shaft. The lifting mechanism is used to convert the rotational motion of the driving mechanism into a linear motion. The lifting mechanism includes an intermediate swing arm 3, a connecting frame 5, and a connecting rod assembly 4. The intermediate swing arm 3 is pivotally connected to the connecting frame 5, and the connecting frame 5 is pivotally connected to the connecting rod assembly 4. Two small connecting rod mounting grooves 52 are formed by inward depressions on the left and right sides of the connecting frame 5. The small connecting rod mounting grooves 52 on the left and right sides are symmetrically arranged. The number of the connecting rod assemblies 4 is the same as the number of the small connecting rod mounting grooves 52. The lower die base 7 is supported in multiple directions by four groups of connecting rod assemblies 4, so that the lower die base 7 is more stable during lifting, not prone to deflection, improving the operating stability, and significantly reducing the pressure borne by a single group of connecting rod assemblies 4, extending the service life of the connecting rod assemblies 4. The connecting rod assembly 4 includes a small connecting rod 41. The small connecting rod 41 is placed in the small connecting rod mounting groove 52 and pivotally connected to the small connecting rod mounting groove 52. Two small connecting rod mounting grooves 52 on the same side share a connecting shaft 53, further increasing the synchronism of the operation of the connecting rod assemblies 4 on the same side, making the lifting of the lower die base 7 more stable. At the same time, the connecting rod assembly 4 is installed by inserting into the small connecting rod mounting groove 52. The connecting frame 5 on one side of the small connecting rod mounting groove 52 is simultaneously stressed by a connecting shaft 53, with a larger stress-bearing area, and the stress is dispersed to a wider area. The stress borne by each unit area is relatively small, making the connecting frame 5 not easily damaged during use and increasing the service life of the connecting frame 5. The connecting rod assembly is pivotally connected to the lower die base. The longitudinal limiting device is used to limit the connecting frame so that it can only move up and down.

[0020] Further, a non-circular power shaft connection port 211 is provided on the active swing arm 21. The shape of the end of the power shaft 121 matches the shape of the power shaft connection port 211. The power shaft 121 is inserted into the power shaft connection port 211. When the power shaft 121 rotates, it can drive the active swing arm 21 to rotate around the power shaft 121.

[0021] Further, a non-circular intermediate swing arm connection port 212 is provided on the active swing arm 21 above the power shaft connection port 211. A middle swing arm shaft 31 is connected to the intermediate swing arm 3 by a bearing. Both ends of the middle swing arm shaft 31 are pivotally connected to the driven swing arm 22 and the active swing arm 21 respectively. The shape of one end of the middle swing arm shaft 31 close to the active swing arm 21 matches the shape of the intermediate swing arm connection port 212. Compared with an ordinary circular insertion port, the non-circular intermediate swing arm connection port 212 is not prone to relative sliding of the contact surface when subjected to a torsional force, and has higher stability.

[0022] Further, a through connection frame shaft port 32 is provided on the upper part of the intermediate swing arm 3. A connection frame rotating shaft is provided on the connection frame 5 and passes through the connection frame shaft port 32. When the power shaft 121 rotates, the intermediate swing arm 3 connected to the middle swing arm shaft 31 by a bearing rotates around the power shaft 121, thereby changing the height of the connection frame shaft port 32 and driving the connection frame 5 to move up and down.

[0023] Further, the connecting rod assembly 4 further includes a lower connecting rod group 42 and an upper connecting rod 43. The lower connecting rod group 42 is composed of two lower connecting rods. The lower connecting rods are strip-shaped and bulge towards the connection frame in the middle. The lower connecting rods are provided with shaft ports on the upper and lower sides and the bulging positions respectively.

[0024] Further, one shaft port is provided on each of the left and right sides of the small connecting rod 41. One shaft port of the small connecting rod 41 is placed in the small connecting rod mounting groove 52 to be pivotally connected to the connection frame 5, and the other shaft port of the small connecting rod 41 is placed in the lower connecting rod group 42 to be pivotally connected to the shaft port at the bulging position of the lower connecting rod.

[0025] Further, a shaft seat 72 is provided at the bottom of the lower die base 7. Shaft ports are provided at the upper and lower ends of the upper connecting rod 43 respectively. The shaft port at the upper end of the upper connecting rod 43 is placed in the shaft seat 72 to be pivotally connected to the shaft seat 72, and the shaft port at the lower end of the upper connecting rod 43 is placed in the lower connecting rod group 42 to be pivotally connected to the shaft port on the upper side of the lower connecting rod. A shaft connecting block 62 is provided on the frame 6. The shaft connecting block 62 is placed in the lower connecting rod group 42 to be pivotally connected to the shaft port on the lower side of the lower connecting rod. When the connection frame 5 moves up and down, the lower connecting rod group 42 is pulled by the small connecting rod 41, so that the lower connecting rod group 42 rotates around its pivot connection with the shaft connecting block 62, and further the upper connecting rod 43 drives the lower die base 7 to move up and down.

[0026] Further, the longitudinal limiting device includes a limiting rod 71 provided on the lower die base 7. The connection frame 5 is provided with the same number of limiting holes 51 as the limiting rod 71. A limiting channel (not shown in the figure) is provided in the frame directly below the limiting holes 51. Guide copper sleeves 511 are installed on the limiting holes 51 and the limiting channels. The limiting rod passes through the guide copper sleeves 511 in the limiting holes 51 and the limiting channels, and the limiting rod restricts the connection frame 5 to only move up and down.

[0027] Further, a plurality of bearing sleeves 61 are provided at the lower part of the frame, and the power shaft 121 and the driven shaft 122 pass through the bearing sleeves 61 to increase the stability of the power shaft 121 during rotation.

[0028] The above are only the preferred embodiments of the present invention, and are not limitations on the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the technical solution of the present invention, any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A five-point type lower die lifting structure of a cup-making machine, comprising a frame, a lower die base, a lifting mechanism, a driving mechanism and a longitudinal limiting device, wherein the lower die base is slidably mounted on the frame, and is characterized in that The driving mechanism includes a servo motor and a speed reducer. The output shaft of the servo motor is connected to the input end of the speed reducer. A power shaft is provided at the output end of the speed reducer. A driven shaft is provided on the frame. The axis of the driven shaft is located on the extension line of the axis of the power shaft. An active swing arm is provided on one side of the power shaft close to the driven shaft. A driven swing arm is provided on one side of the driven shaft close to the power shaft. The lifting mechanism includes an intermediate swing arm, a connecting frame, and a connecting rod assembly. The intermediate swing arm is pivotally connected to the connecting frame, and the connecting frame is pivotally connected to the connecting rod assembly. The intermediate swing arm is pivotally connected to the active swing arm and the driven swing arm. Two small connecting rod mounting grooves are formed by inward depressions on the left and right sides of the connecting frame, and the small connecting rod mounting grooves on the left and right sides are symmetrically arranged. The number of the connecting rod assemblies is the same as the number of the small connecting rod mounting grooves. The connecting rod assembly includes a small connecting rod. The small connecting rod is placed in the small connecting rod mounting groove and pivotally connected to the small connecting rod mounting groove. The two small connecting rod mounting grooves on the same side share a connecting shaft. The connecting rod assembly is pivotally connected to the lower die base. The longitudinal limiting device is used to limit the connecting frame so that it can only move up and down.

2. The five-point lower die lifting structure of a cup-making machine according to claim 1, characterized in that A non-circular power shaft connection port is provided on the active swing arm. The shape of the end of the power shaft matches the shape of the power shaft connection port, and the power shaft is inserted into the power shaft connection port.

3. The five-point lower die lifting structure of a cup-making machine according to claim 2, characterized in that A non-circular intermediate swing arm connection port is provided on the active swing arm above the power shaft connection port. An intermediate swing arm shaft is connected to the intermediate swing arm by bearings. The two ends of the intermediate swing arm shaft are respectively pivotally connected to the driven swing arm and the active swing arm. The shape of the end of the intermediate swing arm shaft close to the active swing arm matches the shape of the intermediate swing arm connection port.

4. The five-point lower die lifting structure of a cup-making machine according to claim 3, characterized in that A through connecting frame shaft port is further provided at the upper part of the intermediate swing arm. A connecting frame rotating shaft is provided on the connecting frame and passes through the connecting frame shaft port.

5. The five-point lower die lifting structure of a cup-making machine according to claim 1, characterized in that The connecting rod assembly further includes a lower connecting rod group and an upper connecting rod. The lower connecting rod group is composed of two lower connecting rods. The lower connecting rods are strip-shaped and protrude towards the connecting frame in the middle. The lower connecting rods are respectively provided with shaft ports on the upper and lower sides and at the protruding positions.

6. The five-point lower die lifting structure of a cup-making machine according to claim 5, characterized in that One shaft port is provided on each of the left and right sides of the small connecting rod. One shaft port of the small connecting rod is placed in the small connecting rod mounting groove and pivotally connected to the connecting frame. The other shaft port of the small connecting rod is placed in the lower connecting rod group and pivotally connected to the shaft port at the protruding position of the lower connecting rod.

7. The five-point lower die lifting structure of a cup-making machine according to claim 6, wherein A shaft seat is provided at the bottom of the lower die base. Shaft ports are respectively provided at the upper and lower ends of the upper connecting rod. The shaft port at the upper end of the upper connecting rod is placed in the shaft seat and pivotally connected to the shaft seat. The shaft port at the lower end of the upper connecting rod is placed in the lower connecting rod group and pivotally connected to the shaft port on the upper side of the lower connecting rod. An axle connecting block is provided on the frame. The axle connecting block is placed in the lower connecting rod group and pivotally connected to the shaft port on the lower side of the lower connecting rod.

8. The five-point type lower die lifting structure of a cup-making machine according to claim 1, characterized in that The longitudinal limiting device includes a limiting rod provided on the lower die base. The connecting frame is provided with the same number of limiting holes as the number of the limiting rods. A limiting channel is provided in the frame directly below the limiting holes. Guide copper sleeves are installed on the limiting holes and the limiting channels. The limiting rod passes through the guide copper sleeve.

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